125125851 has 4 divisors (see below), whose sum is σ = 166834472. Its totient is φ = 83417232.

The previous prime is 125125837. The next prime is 125125859. The reversal of 125125851 is 158521521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 125125851 - 2¹⁰ = 125124827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125125859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20854306 + ... + 20854311.

It is an arithmetic number, because the mean of its divisors is an integer number (41708618).

Almost surely, 2^125125851 is an apocalyptic number.

125125851 is a deficient number, since it is larger than the sum of its proper divisors (41708621).

125125851 is an equidigital number, since it uses as much as digits as its factorization.

125125851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41708620.

The product of its digits is 4000, while the sum is 30.

The square root of 125125851 is about 11185.9666993962. The cubic root of 125125851 is about 500.1677450502.

The spelling of 125125851 in words is "one hundred twenty-five million, one hundred twenty-five thousand, eight hundred fifty-one".